Life of the Oceans - Ocean Worlds: The Story of Seas on Earth and Other Planets - page 125

0.45

Terrestrial biosphere

0.54 0.54

0.60
0.65

Cambrian radiation
Ediacaran metazoans
Origin of animals

Snowball glaciations

0.70

Origin of sex and multicellular
organisms

1.20

1.70

Eukaryotes

Free oxygen in atmosphere:
first snowball glaciation

2.5

2.40 Oxygenic

photosynthesis

2.40

2

Beginning of plate tectonics
and modern-style ocean basins

3.20

3.80

3.80
3.90

Permanent oceans
Late heavy bombardment

Origin of life

4.0

4.50

Earth-Theia collision

4.54

Proto-Earth

4.60

Birth of the Solar System

fig. 10. Major events in the story of ocean life, versus geological time.

better remembered for his poem Baccho in Toscana , an ecstatic celebra-
tion of the wines of the region.
Despite the more than 300 years that separate us in time from Redi's
investigations, some echoes of the idea of spontaneous generation